"and" has an etymology, too. It is cognate to things like "anti-" and "end".
By Old English the conjunction "and" had emerged (it was apparently a proto-Germanic innovation), but "and" was also still in use as a preposition meaning against, before, etc.
"and heora ordfruman" = "before their creator", "andswaru" = "answer" (lit. against-speaking). – Matt 3
https://en.wiktionary.org/wiki/andswaru
語源 andswaru